Differential hair curler



. 21, 1962 l. H. BROWN DIFFERENTIAL HAIR CURLER Filed Feb. 1, 1960 INVENTOR /R VIN H. BROWN ATTORNEY 3,050,069 DTFFERENTIAL CURLER Irvin H. Brown, 775 Post St., San Francisco, Calif. Filed Feb. 1, 1960, Ser. No. 5,783 1 Claim. (Cl. 13239) My invention relates to a differential hair curler.

The primary object of this invention is to provide a differential hair curler which in one operation produces different curls or waves on the same strand of hair.

Another object of my invention is to provide a hair curler, which produces small curls at the end of a strand of hair and large wave on the rest of said strand.

Another object of this invention is to provide a hair curler consisting of two difierent rollers upon which rollers a strand of hair is wound to produce different curls on the same.

Another object of this invention is to provide a hair curler consisting of two rollers of different diameters, for winding the end of a strand of hair around a roller of a smaller diameter, inserting said roller into the second roller of a larger diameter and completing the winding operation.

Other objects and advantages will appear as the specification proceeds and the novel features of the device will be particularly pointed out in the claims hereto annexed.

In this specification and the annexed drawing, the invention is illustrated in the form considered to be the best, but it is understood, that the invention is not limited to such form; and it is also to be under-stood that in and by the claim following the description, it is desired to cover the invention in whatsoever form it may be embodied.

This invention is illustrated in a drawing in which:

FIG. 1 is a plan view of the differential curler.

FIG. 2 is an end view of the same.

FIG. 3 is a vertical transverse cross-section of the smaller roller.

FIG. 4 is a vertical transverse cross-section of the larger roller.

FIG. 5 is a side view of the big roller with a part of the smaller roller.

FIG. 6 is a vertical cross-section of the differential curler, showing a strand of hair wound about the rollers, and

FIG. 7 shows a strand of hair waved and curled with the assistance of the diiferential curler.

In detail, my differential curler consists of two rollers 1 and 2 respectively. The rollers are preferably made of plastic.

The roller 1 comprises a comparatively short hollow cylinder with a thin wall, perforated in many place, as shown at 4, hand having a large longitudinal opening 5 cut in said roller leaving strips 6 at each end thereof.

The roller 2 also consists of a short hollow cylinder 8 with a thin wall perforated as shown at 9. The latter roller is of much smaller diameter and is much shorter than the roller 1. The size of the cylinder 8 is so selected that said cylinder may be placed easily inside the roller 1 through the opening 5, the width of the latter opening being somewhat larger than the outside diameter of the roller 2. The latter is provided with a pair of longitudinal ears 10 which extend from the opposite ends of the cylinder 8. When the cylinder 8 is inserted into the roller 1, the ears 10 rest on the strips 6 and thus prevent the rotation of the cylinder 8 in said roller 1.

The roller 1 is preferably made of diiferent diameters from one inch and a quarter to one half inch. The roller 2 correspondingly is made from three quarter inch to three eights of an inch in diameter. The rollers of other sizes than the above indicated, may also be made.

The device is used as follows: a strand of hair 12 is partially wound around the smaller roller 2. Thereupon said roller with the hair wound thereon is placed inside of the roller 1, through the opening 5, so that the cars 10 rest on the strips 6 of the roller 1. Then the rest of the strand is wound around the roller 1 and over the portion of the roller 2 protruding above the roller 1.

The hair may be wound as tightly as desired as the strand of hair being wound tightly around the roller 1 presses the ears 10 upon the strips 6, thus preventing said roller 2 from rotating inside the roller 1.

The usual curling solution is applied to the wound hair if permanent wave is desired. Then water is applied, the hair is dried of the excess of water, and the solution is neutralized. Thereupon the hair is throughly dried in a hair dryer.

The strand of hair wound on two separate rollers presents a much greater drying surface. The strand of hair is wound in lesser thickness on said two rollers as is wound on a single roller now in general use. Therefore, the hair dries in much shorter time when the presently described curler is used. The rollers 1 and 2 being generously perforated make the drying operation particularly easy and quick. As less hair is wound on each roller, as it would have been on one roller, much smoother winding is possible without bunching the hair on one roller, and with much even tension over the winding surface.

The use of the above differential curler makes it possible and practical to produce a comparatively large wave and at the same time to curl closely a desired length of the hair strand at the end thereof.

I claim:

A differential curler comprising:

a first roller for Winding partially an end portion of a strand of hair hereon consisting of a hollow cylinder having a plurality of large perforations in the wall thereof and opened on both ends to facilitate the drying of the hair wound thereon; and

a pair of ears extending axially oppositely from the ends of said cylinder; and

a second roller consisting of a hollow cylinder of a much larger diameter than that of the first mentioned cylinder and having a plurality of large perforations in the wall thereof and opened on both ends to facilitate the drying of the hair wound thereon,

said second mentioned roller having a longitudinal opening therein for admitting the first mentioned roller with the strand of hair partially wound thereon into said second mentioned roller so that said ears rest on the outer surface of the second mentioned roller for winding the remaining portion of said strand on the latter.

References Cited in the file of this patent UNITED STATES PATENTS 

